Use of free silicon in liquid phase sintering of silicon nitrides and sialons

Patent · Tue Nov 12 00:00:00 EST 1985

OSTI ID:7149820

Raj, R; Baik, S

This invention relates to the production of improved high density nitrogen based ceramics by liquid-phase densification of silicon nitride or a compound of silicon-nitrogen-oxygen-metal, e.g. a sialon. In the process and compositions of the invention minor amounts of finely divided silicon are employed together with the conventional liquid phase producing additives to enhance the densification of the resultant ceramic. 4 figs.

• Research Organization: Cornell Univ., Ithaca, NY (United States)
• DOE Contract Number: AC02-77ER04386
• Assignee: Cornell Research Foundation, Inc., Ithaca, NY (United States)
• Patent Number(s): US 4552711; A
• Application Number: CNN: DMR-79-24008; PPN: US 6-634530
• OSTI ID: 7149820
• Resource Relation: Patent File Date: 26 Jul 1984
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
SINTERING
SILICON NITRIDES
CERAMICS
COMPACTING
DENSITY
ALUMINIUM COMPOUNDS
CHALCOGENIDES
FABRICATION
NITRIDES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PNICTIDES
SILICON COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication